Mercurial > projects > ldc
annotate dmd2/link.c.nolink @ 1138:4c8bb03e4fbc
Update DtoConstFP() to be correct after LLVM r67562, which changed the way the
APFloat constructor expects its i80 APInts to be formatted. (They're now
actually consistent with the x87 format)
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Tue, 24 Mar 2009 15:24:59 +0100 |
parents | f04dde6e882c |
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rev | line source |
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1 |
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2 // Copyright (c) 1999-2008 by Digital Mars |
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3 // All Rights Reserved |
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4 // written by Walter Bright |
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5 // http://www.digitalmars.com |
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6 // License for redistribution is by either the Artistic License |
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7 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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8 // See the included readme.txt for details. |
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9 |
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10 |
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11 #include <stdio.h> |
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12 #include <ctype.h> |
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13 #include <assert.h> |
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14 #include <stdarg.h> |
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15 #include <string.h> |
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16 #include <stdlib.h> |
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17 |
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18 #if _WIN32 |
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19 #include <process.h> |
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20 #endif |
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21 |
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22 #if linux |
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23 #include <sys/types.h> |
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24 #include <sys/wait.h> |
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25 #include <unistd.h> |
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26 #endif |
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27 |
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28 #include "root.h" |
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29 |
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30 #include "mars.h" |
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31 |
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32 #include "mem.h" |
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33 |
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34 int executecmd(char *cmd, char *args, int useenv); |
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35 int executearg0(char *cmd, char *args); |
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36 |
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37 /**************************************** |
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38 * Write filename to cmdbuf, quoting if necessary. |
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39 */ |
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40 |
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41 void writeFilename(OutBuffer *buf, char *filename, size_t len) |
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42 { |
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43 /* Loop and see if we need to quote |
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44 */ |
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45 for (size_t i = 0; i < len; i++) |
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46 { char c = filename[i]; |
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47 |
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48 if (isalnum(c) || c == '_') |
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49 continue; |
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50 |
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51 /* Need to quote |
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52 */ |
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53 buf->writeByte('"'); |
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54 buf->write(filename, len); |
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55 buf->writeByte('"'); |
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56 return; |
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57 } |
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58 |
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59 /* No quoting necessary |
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60 */ |
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61 buf->write(filename, len); |
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62 } |
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63 |
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64 void writeFilename(OutBuffer *buf, char *filename) |
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65 { |
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66 writeFilename(buf, filename, strlen(filename)); |
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67 } |
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68 |
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69 /***************************** |
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70 * Run the linker. Return status of execution. |
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71 */ |
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72 |
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73 int runLINK() |
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74 { |
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75 #if _WIN32 |
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76 char *p; |
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77 int i; |
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78 int status; |
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79 OutBuffer cmdbuf; |
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80 |
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81 global.params.libfiles->push((void *) "user32"); |
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82 global.params.libfiles->push((void *) "kernel32"); |
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83 |
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84 for (i = 0; i < global.params.objfiles->dim; i++) |
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85 { |
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86 if (i) |
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87 cmdbuf.writeByte('+'); |
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88 p = (char *)global.params.objfiles->data[i]; |
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89 char *ext = FileName::ext(p); |
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90 if (ext) |
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91 // Write name sans extension |
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92 writeFilename(&cmdbuf, p, ext - p - 1); |
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93 else |
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94 writeFilename(&cmdbuf, p); |
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95 } |
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96 cmdbuf.writeByte(','); |
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97 if (global.params.exefile) |
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98 writeFilename(&cmdbuf, global.params.exefile); |
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99 else |
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100 { /* Generate exe file name from first obj name. |
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101 * No need to add it to cmdbuf because the linker will default to it. |
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102 */ |
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103 char *n = (char *)global.params.objfiles->data[0]; |
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104 n = FileName::name(n); |
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105 FileName *fn = FileName::forceExt(n, "exe"); |
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106 global.params.exefile = fn->toChars(); |
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107 } |
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108 |
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109 // Make sure path to exe file exists |
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110 { char *p = FileName::path(global.params.exefile); |
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111 FileName::ensurePathExists(p); |
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112 mem.free(p); |
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113 } |
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114 |
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115 cmdbuf.writeByte(','); |
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116 if (global.params.run) |
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117 cmdbuf.writestring("nul"); |
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118 // if (mapfile) |
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119 // cmdbuf.writestring(output); |
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120 cmdbuf.writeByte(','); |
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121 |
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122 for (i = 0; i < global.params.libfiles->dim; i++) |
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123 { |
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124 if (i) |
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125 cmdbuf.writeByte('+'); |
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126 writeFilename(&cmdbuf, (char *) global.params.libfiles->data[i]); |
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127 } |
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128 |
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129 if (global.params.deffile) |
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130 { |
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131 cmdbuf.writeByte(','); |
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132 writeFilename(&cmdbuf, global.params.deffile); |
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133 } |
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134 |
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135 /* Eliminate unnecessary trailing commas */ |
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136 while (1) |
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137 { i = cmdbuf.offset; |
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138 if (!i || cmdbuf.data[i - 1] != ',') |
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139 break; |
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140 cmdbuf.offset--; |
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141 } |
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142 |
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143 if (global.params.resfile) |
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144 { |
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145 cmdbuf.writestring("/RC:"); |
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146 writeFilename(&cmdbuf, global.params.resfile); |
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147 } |
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148 |
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149 #if 0 |
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150 if (mapfile) |
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151 cmdbuf.writestring("/m"); |
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152 if (debuginfo) |
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153 cmdbuf.writestring("/li"); |
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154 if (codeview) |
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155 { |
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156 cmdbuf.writestring("/co"); |
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157 if (codeview3) |
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158 cmdbuf.writestring(":3"); |
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159 } |
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160 #else |
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161 if (global.params.symdebug) |
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162 cmdbuf.writestring("/co"); |
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163 #endif |
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164 |
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165 cmdbuf.writestring("/noi"); |
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166 for (i = 0; i < global.params.linkswitches->dim; i++) |
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167 { |
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168 cmdbuf.writestring((char *) global.params.linkswitches->data[i]); |
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169 } |
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170 cmdbuf.writeByte(';'); |
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171 |
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172 p = cmdbuf.toChars(); |
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173 |
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174 FileName *lnkfilename = NULL; |
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175 size_t plen = strlen(p); |
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176 if (plen > 7000) |
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177 { |
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178 lnkfilename = FileName::forceExt(global.params.exefile, "lnk"); |
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179 File flnk(lnkfilename); |
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180 flnk.setbuffer(p, plen); |
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181 flnk.ref = 1; |
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182 if (flnk.write()) |
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183 error("error writing file %s", lnkfilename); |
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184 if (lnkfilename->len() < plen) |
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185 sprintf(p, "@%s", lnkfilename->toChars()); |
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186 } |
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187 |
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188 char *linkcmd = getenv("LINKCMD"); |
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189 if (!linkcmd) |
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190 linkcmd = "link"; |
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191 status = executecmd(linkcmd, p, 1); |
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192 if (lnkfilename) |
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193 { |
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194 remove(lnkfilename->toChars()); |
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195 delete lnkfilename; |
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196 } |
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197 return status; |
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198 #elif linux |
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199 pid_t childpid; |
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200 int i; |
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201 int status; |
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202 |
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203 // Build argv[] |
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204 Array argv; |
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205 |
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206 const char *cc = getenv("CC"); |
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207 if (!cc) |
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208 cc = "gcc"; |
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209 argv.push((void *)cc); |
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210 argv.insert(1, global.params.objfiles); |
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211 |
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212 // None of that a.out stuff. Use explicit exe file name, or |
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213 // generate one from name of first source file. |
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214 argv.push((void *)"-o"); |
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215 if (global.params.exefile) |
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216 { |
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217 argv.push(global.params.exefile); |
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218 } |
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219 else |
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220 { // Generate exe file name from first obj name |
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221 char *n = (char *)global.params.objfiles->data[0]; |
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222 char *e; |
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223 char *ex; |
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224 |
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225 n = FileName::name(n); |
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226 e = FileName::ext(n); |
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227 if (e) |
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228 { |
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229 e--; // back up over '.' |
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230 ex = (char *)mem.malloc(e - n + 1); |
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231 memcpy(ex, n, e - n); |
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232 ex[e - n] = 0; |
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233 } |
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234 else |
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235 ex = (char *)"a.out"; // no extension, so give up |
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236 argv.push(ex); |
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237 global.params.exefile = ex; |
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238 } |
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239 |
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240 // Make sure path to exe file exists |
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241 { char *p = FileName::path(global.params.exefile); |
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242 FileName::ensurePathExists(p); |
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243 mem.free(p); |
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244 } |
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245 |
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246 argv.insert(argv.dim, global.params.libfiles); |
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247 |
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248 if (global.params.symdebug) |
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249 argv.push((void *)"-g"); |
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250 |
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251 argv.push((void *)"-m32"); |
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252 |
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253 if (0 && global.params.exefile) |
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254 { |
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255 /* This switch enables what is known as 'smart linking' |
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256 * in the Windows world, where unreferenced sections |
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257 * are removed from the executable. It eliminates unreferenced |
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258 * functions, essentially making a 'library' out of a module. |
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259 * Although it is documented to work with ld version 2.13, |
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260 * in practice it does not, but just seems to be ignored. |
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261 * Thomas Kuehne has verified that it works with ld 2.16.1. |
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262 * BUG: disabled because it causes exception handling to fail |
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263 */ |
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264 argv.push((void *)"-Xlinker"); |
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265 argv.push((void *)"--gc-sections"); |
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266 } |
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267 |
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268 for (i = 0; i < global.params.linkswitches->dim; i++) |
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269 { char *p = (char *)global.params.linkswitches->data[i]; |
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270 if (!p || !p[0] || !(p[0] == '-' && p[1] == 'l')) |
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271 // Don't need -Xlinker if switch starts with -l |
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272 argv.push((void *)"-Xlinker"); |
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273 argv.push((void *) p); |
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274 } |
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275 |
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276 /* Standard libraries must go after user specified libraries |
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277 * passed with -l. |
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278 */ |
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279 const char *libname = (global.params.symdebug) |
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280 ? global.params.debuglibname |
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281 : global.params.defaultlibname; |
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282 char *buf = (char *)malloc(2 + strlen(libname) + 1); |
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283 strcpy(buf, "-l"); |
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284 strcpy(buf + 2, libname); |
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285 argv.push((void *)buf); // turns into /usr/lib/libphobos2.a |
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286 |
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287 argv.push((void *)"-ldruntime"); |
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288 argv.push((void *)"-lpthread"); |
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289 argv.push((void *)"-lm"); |
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290 |
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291 if (!global.params.quiet || global.params.verbose) |
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292 { |
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293 // Print it |
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294 for (i = 0; i < argv.dim; i++) |
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295 printf("%s ", (char *)argv.data[i]); |
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296 printf("\n"); |
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297 fflush(stdout); |
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298 } |
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299 |
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300 argv.push(NULL); |
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301 childpid = fork(); |
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302 if (childpid == 0) |
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303 { |
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304 execvp((char *)argv.data[0], (char **)argv.data); |
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305 perror((char *)argv.data[0]); // failed to execute |
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306 return -1; |
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307 } |
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308 |
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309 waitpid(childpid, &status, 0); |
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310 |
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311 status=WEXITSTATUS(status); |
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312 if (status) |
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313 printf("--- errorlevel %d\n", status); |
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314 return status; |
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315 #else |
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316 printf ("Linking is not yet supported for this version of DMD.\n"); |
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317 return -1; |
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318 #endif |
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319 } |
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320 |
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321 /********************************** |
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322 * Delete generated EXE file. |
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323 */ |
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324 |
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325 void deleteExeFile() |
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326 { |
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327 if (global.params.exefile) |
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328 { |
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329 //printf("deleteExeFile() %s\n", global.params.exefile); |
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330 remove(global.params.exefile); |
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331 } |
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332 } |
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333 |
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334 /****************************** |
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335 * Execute a rule. Return the status. |
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336 * cmd program to run |
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337 * args arguments to cmd, as a string |
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338 * useenv if cmd knows about _CMDLINE environment variable |
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339 */ |
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340 |
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341 #if _WIN32 |
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342 int executecmd(char *cmd, char *args, int useenv) |
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343 { |
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344 int status; |
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345 char *buff; |
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346 size_t len; |
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347 |
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348 if (!global.params.quiet || global.params.verbose) |
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349 { |
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350 printf("%s %s\n", cmd, args); |
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351 fflush(stdout); |
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352 } |
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353 |
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354 if ((len = strlen(args)) > 255) |
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355 { char *q; |
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356 static char envname[] = "@_CMDLINE"; |
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357 |
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358 envname[0] = '@'; |
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359 switch (useenv) |
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360 { case 0: goto L1; |
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361 case 2: envname[0] = '%'; break; |
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362 } |
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363 q = (char *) alloca(sizeof(envname) + len + 1); |
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364 sprintf(q,"%s=%s", envname + 1, args); |
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365 status = putenv(q); |
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366 if (status == 0) |
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367 args = envname; |
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368 else |
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369 { |
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370 L1: |
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371 error("command line length of %d is too long",len); |
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372 } |
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373 } |
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374 |
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375 status = executearg0(cmd,args); |
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376 #if _WIN32 |
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377 if (status == -1) |
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378 status = spawnlp(0,cmd,cmd,args,NULL); |
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379 #endif |
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380 // if (global.params.verbose) |
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381 // printf("\n"); |
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382 if (status) |
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383 { |
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384 if (status == -1) |
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385 printf("Can't run '%s', check PATH\n", cmd); |
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386 else |
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387 printf("--- errorlevel %d\n", status); |
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388 } |
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389 return status; |
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390 } |
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391 #endif |
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392 |
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393 /************************************** |
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394 * Attempt to find command to execute by first looking in the directory |
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395 * where DMD was run from. |
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396 * Returns: |
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397 * -1 did not find command there |
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398 * !=-1 exit status from command |
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399 */ |
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400 |
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401 #if _WIN32 |
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402 int executearg0(char *cmd, char *args) |
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403 { |
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404 char *file; |
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405 char *argv0 = global.params.argv0; |
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406 |
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407 //printf("argv0='%s', cmd='%s', args='%s'\n",argv0,cmd,args); |
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408 |
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409 // If cmd is fully qualified, we don't do this |
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410 if (FileName::absolute(cmd)) |
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411 return -1; |
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412 |
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413 file = FileName::replaceName(argv0, cmd); |
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414 |
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415 //printf("spawning '%s'\n",file); |
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416 #if _WIN32 |
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417 return spawnl(0,file,file,args,NULL); |
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418 #elif linux |
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419 char *full; |
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420 int cmdl = strlen(cmd); |
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421 |
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422 full = (char*) mem.malloc(cmdl + strlen(args) + 2); |
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423 if (full == NULL) |
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424 return 1; |
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425 strcpy(full, cmd); |
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426 full [cmdl] = ' '; |
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427 strcpy(full + cmdl + 1, args); |
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428 |
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429 int result = system(full); |
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430 |
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431 mem.free(full); |
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432 return result; |
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433 #else |
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434 assert(0); |
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435 #endif |
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436 } |
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437 #endif |
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438 |
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439 /*************************************** |
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440 * Run the compiled program. |
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441 * Return exit status. |
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442 */ |
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443 |
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444 int runProgram() |
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445 { |
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446 //printf("runProgram()\n"); |
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447 if (global.params.verbose) |
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448 { |
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449 printf("%s", global.params.exefile); |
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450 for (size_t i = 0; i < global.params.runargs_length; i++) |
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451 printf(" %s", (char *)global.params.runargs[i]); |
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452 printf("\n"); |
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453 } |
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454 |
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455 // Build argv[] |
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456 Array argv; |
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457 |
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458 argv.push((void *)global.params.exefile); |
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459 for (size_t i = 0; i < global.params.runargs_length; i++) |
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460 { char *a = global.params.runargs[i]; |
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461 |
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462 #if _WIN32 |
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463 // BUG: what about " appearing in the string? |
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464 if (strchr(a, ' ')) |
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465 { char *b = (char *)mem.malloc(3 + strlen(a)); |
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466 sprintf(b, "\"%s\"", a); |
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467 a = b; |
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468 } |
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469 #endif |
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470 argv.push((void *)a); |
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471 } |
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472 argv.push(NULL); |
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473 |
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474 #if _WIN32 |
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475 char *ex = FileName::name(global.params.exefile); |
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476 if (ex == global.params.exefile) |
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477 ex = FileName::combine(".", ex); |
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478 else |
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479 ex = global.params.exefile; |
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480 return spawnv(0,ex,(char **)argv.data); |
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481 #elif linux |
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482 pid_t childpid; |
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483 int status; |
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484 |
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485 childpid = fork(); |
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486 if (childpid == 0) |
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487 { |
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488 const char *fn = (const char *)argv.data[0]; |
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489 if (!FileName::absolute(fn)) |
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490 { // Make it "./fn" |
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491 fn = FileName::combine(".", fn); |
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492 } |
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493 execv(fn, (char **)argv.data); |
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494 perror(fn); // failed to execute |
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495 return -1; |
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496 } |
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497 |
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498 waitpid(childpid, &status, 0); |
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499 |
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500 status = WEXITSTATUS(status); |
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501 return status; |
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502 #else |
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503 assert(0); |
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504 #endif |
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505 } |